SEM SURVEY OF POLLEN MORPHOLOGY IN IRANIAN SPECIES OF HYOSCYAMUS L. (SOLANACEAE)

Descriptions of Hyoscyamus pollen grains based on scanning electron microscopic observations are presented. Three shapes and some namely ellipsoid, spheroid and subspheroid ornamentation types can be distinguished. The aperture type is colporate and ornamentation types are striate, rugulate, striate - perforate, and perforate. The species studied were H. insanus, H. bornmulleri, H. pusillus, H. tenuicaulis, H. leptocalyx, H. malekianus, H. senecionis var. senecionis, H. senecionis var, bipinnatisctus, H. squarosus, H. arachnoideus, H. kurdicus, H. niger, H. reticulatus and H. turcomanicus.

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